import type { Actions, PageServerLoad } from './$types.js';
import { superValidate, setError } from 'sveltekit-superforms';
import { zod } from '$lib/utils/zod-adapter.js';
import { fail } from '@sveltejs/kit';
import { requireAdmin } from '$lib/server/middleware/authorize.js';
import { prisma } from '$lib/server/prisma.js';
import { updateSystemSettingsSchema } from '$lib/utils/validators.js';
import { DEFAULTS } from '$lib/utils/constants.js';

async function getOrCreateSettings() {
	return prisma.systemSettings.upsert({
		where: { id: DEFAULTS.SYSTEM_SETTINGS_ID },
		update: {},
		create: { id: DEFAULTS.SYSTEM_SETTINGS_ID }
	});
}

export const load: PageServerLoad = async (event) => {
	requireAdmin(event);

	const settings = await getOrCreateSettings();

	const form = await superValidate(
		{
			authMode: settings.authMode as 'local' | 'oauth' | 'both',
			registrationEnabled: settings.registrationEnabled,
			oauthClientId: settings.oauthClientId,
			oauthClientSecret: settings.oauthClientSecret,
			oauthDiscoveryUrl: settings.oauthDiscoveryUrl,
			defaultTheme: settings.defaultTheme as 'dark' | 'light',
			defaultPrimaryColor: settings.defaultPrimaryColor,
			healthcheckDefaults: settings.healthcheckDefaults
		},
		zod(updateSystemSettingsSchema)
	);

	return { settings, form };
};

export const actions: Actions = {
	update: async (event) => {
		requireAdmin(event);

		const form = await superValidate(event.request, zod(updateSystemSettingsSchema));

		if (!form.valid) {
			return fail(400, { form });
		}

		try {
			const data: Record<string, unknown> = {};
			const input = form.data;

			if (input.authMode !== undefined) data.authMode = input.authMode;
			if (input.registrationEnabled !== undefined) data.registrationEnabled = input.registrationEnabled;
			if (input.oauthClientId !== undefined) data.oauthClientId = input.oauthClientId;
			if (input.oauthClientSecret !== undefined) data.oauthClientSecret = input.oauthClientSecret;
			if (input.oauthDiscoveryUrl !== undefined) data.oauthDiscoveryUrl = input.oauthDiscoveryUrl;
			if (input.defaultTheme !== undefined) data.defaultTheme = input.defaultTheme;
			if (input.defaultPrimaryColor !== undefined) data.defaultPrimaryColor = input.defaultPrimaryColor;
			if (input.healthcheckDefaults !== undefined) data.healthcheckDefaults = input.healthcheckDefaults;

			await prisma.systemSettings.upsert({
				where: { id: DEFAULTS.SYSTEM_SETTINGS_ID },
				update: data,
				create: {
					id: DEFAULTS.SYSTEM_SETTINGS_ID,
					...data
				}
			});
		} catch (err) {
			const message = err instanceof Error ? err.message : 'Failed to update settings';
			return setError(form, '', message);
		}

		return { form };
	}
};